
This Key Lime Pound Cake is the answer when you crave something bright and decadent at the same time. The combination of buttery pound cake with a tangy Key lime glaze creates a dessert that feels special enough for holidays yet simple enough for a weeknight treat. Whether you serve it as an afternoon pick-me-up or dress it up for a dinner party, every bite bursts with fresh citrus flavor and Southern comfort.
I always make this when friends visit in spring because the citrus kick is irresistible and the texture is so soft everyone goes back for another slice. Last time I made it for a picnic and it was gone before the sandwiches.
Ingredients
- White sugar: creates a sweet base and helps the cake turn golden use the freshest bag for best results
- Unsalted butter: softened to add rich flavor and tender crumb check for a deep yellow hue when buying
- Shortening: improves texture and helps the cake stay moist look for trans-fat-free options
- Cake flour: sifted for a light and delicate crumb try a trusted brand for consistency
- Baking powder: helps the cake rise evenly check the date to make sure it’s still active
- Salt: a pinch sharpens the lime and butter flavors opt for fine sea salt
- Large eggs: bind the batter and provide stability use room temperature eggs for easier mixing
- Heavy cream: adds richness and keeps everything moist invest in high-fat cream from local dairies if possible
- Fresh Key lime juice: gives tangy citrus punch always juice fresh limes instead of using bottled
- Lime zest: brings fragrant oils that intensify the lime flavor pick limes with glossy skins
- Vanilla extract: rounds out the flavors go for pure vanilla for best taste
- Powdered sugar: makes the glaze silky and smooth sift before glazing for a glossy finish
Step-by-Step Instructions
- Prepare the Pan:
- Grease a bundt pan or two loaf pans thoroughly with butter and dust evenly with flour so nothing sticks get into every corner and ridge for easy removal later
- Cream Sugar and Fats:
- Beat white sugar butter and shortening together in a large bowl using a hand mixer until the mixture is light almost fluffy This process adds air and creates a fine texture
- Incorporate Eggs:
- Add eggs one by one mixing well after each addition This step emulsifies the fat and ensures the batter holds together for even baking
- Mix Wet Ingredients:
- Blend in heavy cream fresh Key lime juice lime zest and vanilla extract until the mixture is smooth and combined You want the zest evenly distributed for the best citrus notes
- Combine Dry Ingredients:
- In a separate bowl whisk together the cake flour baking powder and salt Gradually add this dry mix to the wet mixture using low speed until just blended Be careful not to overmix for a tender cake
- Bake the Cake:
- Pour the batter into your prepared pan gently even out the top Bake in a preheated oven at 350 degrees Fahrenheit for about 55 to 65 minutes Check with a toothpick at the thickest part to confirm doneness
- Cool and Unmold:
- Let the cake rest in the pan for 10 minutes This gives it structure so it unmolds cleanly Turn out onto a wire rack and cool fully before glazing
- Glaze the Cake:
- Whisk powdered sugar with Key lime juice and vanilla until you have a thick pourable icing Drizzle generously over the completely cooled cake letting it drip over the sides for a beautiful finish

Key limes smell incredible while zesting and bring such a unique flavor I love seeing how my family’s eyes light up when the glaze goes on because they know the cake is nearly ready We always sneak a sample of the glaze with a spoon
Storage Tips
Keep the cake tightly wrapped or in an airtight container at room temperature for up to three days Refrigerate if your kitchen is especially warm but bring to room temperature before serving for best flavor For longer storage slice and freeze individual pieces They thaw quickly on the counter and taste just as good
Ingredient Substitutions
If Key limes are out of season you can use regular limes for a milder taste Bottled lime juice works in a pinch but the flavor is best from fresh Citrus zest is crucial so do not skip it If you do not have cake flour use all purpose flour and replace two tablespoons per cup with cornstarch
Serving Suggestions
This cake is lovely on its own but pairs beautifully with fresh berries or a dollop of whipped cream For a festive touch top with sliced limes or candied lime peel It makes a great ending to summer meals or a sweet companion to afternoon coffee
Cultural and Historical Context
Pound cake is a Southern classic but the addition of Key lime brings in a fresh Florida twist Key limes are smaller and more aromatic than regular limes and have been prized in Southern baking for their floral citrus scent and tart flavor This recipe honors that tradition while making use of modern kitchen techniques
FAQs about Recipes
- → Can I use regular limes instead of Key limes?
Yes, regular limes can be substituted, though the flavor will be slightly less floral and tart than genuine Key limes.
- → How do I know when the cake is done?
Insert a toothpick into the center; if it comes out clean or with a few moist crumbs, the cake is ready.
- → Can this cake be made in advance?
Absolutely! The cake stays moist for several days when stored in an airtight container.
- → Is it possible to freeze the cake?
Yes, once fully cooled, wrap the cake tightly and freeze for up to three months. Thaw before glazing.
- → What pairs well with Key lime pound cake?
Fresh berries, whipped cream, or even a scoop of vanilla ice cream complement the cake beautifully.